The LT4-544P-4G from MTS Systemtechnik GmbH is a Power Divider with Frequency 400 to 4000 MHz, Insertion Loss 1.25 to 1.50 dB, Isolation 21 to 25 dB, Input Power 1 to 10 W, Amplitude Balance 0.1 to 0.3 dB. Tags: Module with Connectors, Wilkinson Power Divider. More details for LT4-544P-4G can be seen below.